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Putting an environmental spin on laundry days

23 November 2021 | Story Leonie Bolleurs | Photo Tania Allen

Dr Jana Vermaas and Ketshepileone Matlhoko are working on research that leaves your washing clean and fresh without the use of any detergents, which is also beneficial to the environment.

Cold water or hot water? Omo or Skip? Laundry blues is a reality in most households and when you add stains to the equation, then what was supposed to be part of your weekly household routine, becomes frustrating and time consuming.

Researchers at the University of the Free State (UFS) are conducting research that is putting a whole new environmentally friendly spin on laundry day.

Sustainability and environmental conservation

Dr Jana Vermaas, Lecturer in the Department of Sustainable Food Systems and Development at the UFS, is passionate about textiles and sustainability – almost a decade ago, she conducted a study on the efficacy of anolyte as a disinfectant for textiles.

She describes the process: “During electrochemical activation, a dilute solution of natrium chloride/salt passes through a cylindrical electrolytic cell where the anodic and cathodic chambers are separated. Two separate streams of electrochemically activated water are produced. Anolyte as water was produced at the positive electrode and has a low pH, high oxidation-reduction potential and contains dissolved chloride, oxygen, and hydroxyl radical. It also has an antimicrobial effect.”

The benefits of this process are in line with her enthusiasm for environmental conservation.

According to Dr Vermaas, the amount of water and chemicals used to clean textile articles is massive. “Chemicals used to disinfect, for example, hospital laundry, are hazardous. Not all laundries in the industry have a closed loop system or try to remove the chemicals before the wastewater is discarded.”

“Different amounts of detergents have various effects on our fauna and flora. Due to their low biodegradability, toxicity, and high absorbance of particles, detergents can reduce the natural water quality, cause pH changes in soil and water, lead to eutrophication (too many nutrients), reduce light transmission, and increase salinity in water sources.”

“But with the catholyte and anolyte process, water returns to its original status, which means that the water solution becomes inactive again after production where it existed in a metastable state while containing many free radicals and a variety of molecules for 48 hours. Thus, no chemicals are left in the wastewater. The water can therefore be recycled, not as potable water but, for example, to flush toilets or to water plants.

“We should do what we can to save water,” she says.

Should you, like Dr Vermaas, also feel strongly about protecting the environment and want to obtain one of these machines that leaves your washing clean and fresh without the use of any detergents, you will be able to find such an appliance in South Arica. However, it does not come cheap. “It is a bit costly for residential use, but might be more accessible in the future,” states Dr Vermaas, who is of the opinion that it is a more sustainable option for commercial laundries.

Detergency properties and colourfastness

Recently, more research has been conducted on this topic, but with a focus on the detergency properties of the catholyte to clean different textile fibres (natural and synthetic). Catholyte, she explains, is water produced at the negative electrode with a high pH, low oxidation-reduction potential, containing alkaline minerals. It also has surface active agents that increase the wetting properties, and it is an antioxidant.

“A master’s student in the department, Ketshepileone Matlhoko, will be submitting her dissertation at the end of November on the possibility of using the catholyte as a scouring agent to clean raw wool,” says Dr Vermaas.

The department is also conducting studies to investigate the influence of both catholyte and anolyte on colourfastness.

*Graphic: Production of electrolysed water (Nakae and Indaba, 2000). Diagram: Supplied

News Archive

UFS council elects Nwaila and Hancke

2005-03-15

Dr Charles Nwaila, Superintendent-General of Education in the Free State, was elected Vice-chairperson of the UFS Council and Judge Faan Hancke was re-elected as Chairperson today.

According to the Rector and Vice-Chancellor, Prof Frederick Fourie, the election of Dr Nwaila is an important achievement for the UFS as Dr Nwaila is a well known leader in education in the Free State.

Dr Nwaila pledged to work constructively with the UFS council and management to ensure that the UFS benefits all people of the province and the country.

The appointments are valid for a term of three years from 1 June 2005 to 31 May 2008.

The elections took place at the quarterly meeting of the UFS Council where a number of other key transformation steps were approved.

The Council approved a Strategic Plan for the UFS which reflects a renewed focus on transformation of the institution, calling it an important roadmap for the future of the UFS.

According to Prof Fourie, the Strategic Plan tried strike a balance between continuity and change, addressing the need to remain an excellent university in an ever-changing context and environment.

Prof Fourie said transformation had many aspects and dimensions and could not be reduced to an issue of numbers.

The Strategic Plan identifies five strategic priorities and corresponding challenges in the next phase of transformation.

The priorities are:

quality and excellence
equity, diversity and redress
financial sustainability
regional co-operation and engagement.
outward thrust

Prof Fourie said that besides the five strategic priorities the plan also reflected concrete actions and interventions to address them.

He said the renewed focus on transformation is embedded in the priorities and specific actions that are identified.

The Council congratulated the management for the roadmap and for the achievements that have already been achieved in terms of transformation.

In order to draft a comprehensive Transformation Plan that will give substance to certain aspects of the UFS Strategic plan – or roadmap – the Council approved the establishment of a Transformation Plan Team.

The team will consist of about 16 people, which includes the two coordinators, Prof Teuns Verschoor, Vice-Rector: Academic Operations, and Dr Ezekiel Moraka, Vice-Rector: Student Affairs.

According to Prof Verschoor, the team was chosen and approved by the Executive Management earlier for the individual contributions that they could make.

While the individuals do not represent particular constituencies on campus they are a very diverse group of persons in terms of race, gender and various sections of the campus and the satellite campuses.

Prof Fourie, said there was an urgency and importance attached to the work of the Transformation Plan Team.

He said that while the team must produce a plan within a tight deadline, the task must be carried out very well, which could mean different stages in the work of the team.

According to the Rector, the UFS must take the lead in best practice transformation, while not underestimating the complexity of the issues facing the UFS.

The full list of names will be finalized soon.

MEDIA RELEASE
Issued by: Mnr Anton Fisher
Director: Strategic Communication
Cel: 072 207 8334
Tel: (051) 401-2749
11 Maart 2005

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